Logging into WP Admin

I have been working on site that was started by someone else who was unable to finish it. It was done in WP.

I have transferred all the files to Blue Host, updated the data base & installed WP.

How do I open a WP account for this site? I received an email from Simple Scripts with login info for the WP admin panel, that has the the link to it, the username-admin & password, but this password & user name aren’t what I’m supposed to use, is it? I tried it